my EWS certificate was issued on 24-8-20 (on the financial year 2019-20) i wanted to know the validity of it?
The validity of the EWS certificate is decided by the designated authorities of the state. In general it is valid for one year and by one year it's 1 fiscal year. So probably your certificate will be valid till 31st March,2021.
I hope this answer helps. All the very best for your future endeavors!